antagonist |
|
|
|
|
|
A drug that binds to a receptor on a cell surface to block activity at the receptor. The antagonist itself does not elicit a biological response, it prevents the activating substance from binding to the receptor and so nullifies its action. For example, drugs such as haloperidol, used to treat the symptoms of schizophrenia, are thought to produce their therapeutic effects by acting as antagonists at dopamine receptors. |
|
|
|
|